20 19 nine days, how many days in total, and when did it start?

90 days, 20 19 years from February 22, 20 18.

Jiujiu, also known as Winter Jiujiu, is a folk solar term in China. The number nine begins at the end of winter in 65438+February of Gregorian calendar and ends on Everyone's Day. There is no exact information about when the custom of counting nine originated. However, it was popular at least in the Northern and Southern Dynasties. The Chronicle of Liang Dynasty and Jingchu wrote: "The number of winter solstice days, 998 1 day is the end of cold." Count nine cold days, that is, from the date of the winter solstice, count nine days every nine days until eighty-one days, and the weather will be warm.

In fact, it is "99-99, plowing cattle everywhere"-90 days, which is 9 days.

Since the winter solstice, China has entered a cold day. Astronomical experts say that the Ninth Five-Year Plan is a more applicable solar term in northern China, especially in the middle and lower reaches of the Yellow River. It started from the day when the winter solstice met Ren, and entered the "number nine", commonly known as "cross nine". From then on, it was called "Nine" every nine days. After nine "nines", it's just 8 1 day, and then spring blossoms.